C+C Serum


An antioxidant powerhouse with 15% vitamin C in a feather-light, water-free formula.

Brighten, smooth, and firm your skin with a daily antioxidant boost. This powerful serum features 10% ascorbic acid (the pure form of vitamin C) plus 5% ascorbyl tetraisopalmitate (an oil-soluble vitamin C derivative). We added some CoQ10 for good measure and put it all in a water-free formula to protect these potent but fragile antioxidants.

1 fl.oz./ 30ml

Brighten up and smooth out with two types of vitamin C.

Rich Vitamin E oil is added to boost the antioxidant impact of this lightweight serum.

Rich Vitamin E oil is added to boost the antioxidant impact of this lightweight serum.

Ascorbic acid

Highly potent antioxidant that helps prevent premature aging by neutralizing free radicals caused by UV damage, pollution, and other sources.

Ascorbyl tetraisopalmitate

Oil-soluble derivative of vitamin C that penetrates skin deeply to fight free radicals, boost collagen production, and brighten skin tone.


Powerful antioxidant that’s found naturally in the skin. CoQ10 levels decrease with age, so skincare featuring this ingredient has anti-aging benefits.

Cyclopentasiloxane, Isododecane, L-Ascorbic Acid, Ascorbyl Tetraisopalmitate, HDI/Trimethylol Hexyllactone Crosspolymer, Polysilicone-11, Dimethicone/Bis-Isobutyl PPG20 Crosspolymer, Ethylhexyl Hydroxystearate, Squalane, Tocopherol, Ubiquinone, Bisabolol, Silica  

How it works

Vitamin C is one of the most powerful skincare ingredients you can get without a prescription. It can:

• Scavenge and neutralize free radicals

•Increase collagen production

• Fade hyperpigmentation

However, the form of vitamin C that’s easiest for your skin to use, L-ascorbic acid, is also extremely unstable, breaking down quickly when exposed to water, heat, or light. That’s why most vitamin C serums turn orange and need to be replaced often.

C+C Serum uses 10% L-ascorbic acid, and to keep it safe, we’ve suspended it in a lightweight silicone formula away from water, heat, and light. That means it’s stable on your shelf for a full year. We also added 5% ascorbyl tetraisopalmitate, an oil-soluble form of vitamin C.

To up the ante, we added another incredibly powerful antioxidant, Coenzyme Q10 (otherwise known as ubiquinone) to make sure no free radical is left un-scavenged. Bisabolol, a key component of German chamomile, helps soothe and calm skin.

Put it all together and you’re left with an incredibly potent yet non-irritating antioxidant serum to help brighten, smooth, and firm your skin.

C+C Serum does not have a pH because it’s an anhydrous (water-free) product.

Is it right for me?

We chose C+C's vitamin C percentages to hit that sweet spot: effective but not irritating. That means it's perfect for even sensitive skin. Since C+C Serum's silicone base evaporates away, it's lightweight, non-greasy, and suitable for all skin types.

Due to the nature of C+C Serum’s silicone base, it’s important to apply the product to clean, dry skin and wait a few minutes before applying your next product. Layering other products without allowing C+C’s base to evaporate can cause pilling or balling of product.

All Stratia products are free of common irritants like fragrance, alcohol, and essential oils.

Customer Reviews
4.4 Based on 86 Reviews
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  • Liquid Gold
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United States United States
  • Skin Type Oily
  • Age Range 31- 40
My top fav

This is my favorite skincare product. If I don't have time for a full routine, I at least make sure I get my C+C serum on. My skin can get oily, and moisturizers are too much, so I need a good serum. I've tried a lot of expensive ones that didn't do much for me. This is my favorite that I've come across.

Megan W.
United States United States
  • Skin Type Dry
  • Age Range 31- 40
Great product, bad packaging

This is a great serum. It feels really nice going on and it works! The packaging however is not great. I like that they did an airless pump but it’s so hard to get any product out. It seems like it’s running out after only a few uses. The labeling has completely worn off and gets all over my hands when I use the bottle. I hope they change the packaging because it really is a nice Vitamin C serum.

Stella S.
France France
  • Skin Type Sensitive
  • Age Range 25- 30
This should be hyped way more then it is

Sincerely, this product is great. I was terrified to use a higher concentration of ascorbic acid but this serum allowed me to use it with no issues whatsoever. Pretty impressed with its stability and the pleasant overall texture and formula. Love stratia !!!!

Mariia A.
Russia Russia
  • Skin Type Normal
  • Age Range 31- 40
Best of the best

The first vitami c product don’t give me an allergy, without a hard smell, nice and gently. Love it

Vanessa C.
United States United States
  • Skin Type Combination
  • Age Range 41- 50
My favorite product

I absolutely love the C+C serum.

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